C. Anu Has a Function

连接:https://codeforces.com/contest/1300/problem/Cnode Anu has created her own function ff: f(x,y)=(x|y)−yf(x,y)=(x|y)−y where || denotes the bitwise OR operation. For example, f(11,6)=(11|6)−6=15−6=9f(
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